Apparatus for raising oil from wells



' Oct. 11, 1927. 1,644,748

B. SCHW EIGER APPARATUS FOR RAISING OIL FROM WELLS. 4 7

Filed Dec. 192:5 2 Sheets-Sheet! 1 644 148 Oct. 11, 1921. SCHWEIGER I APPARATUS FOR RAISINGOIL FROMWELLS Filed Dec. 1926 f .2 sheets-sheet? Patented octiu, 1927.

FFI'CE.

BRUNO SCHWEIGER, OF ERKELENZ, GERMANY.

APP hRATUS FOR RAISING OIL FROM- WELLS.

Application filed December 15, 1926, Serial No. 155,042, and in Germany April 6, 1925.

My invention relates to improvements in apparatus for raising oil froinwells, and more particularly in apparatus of the type in which concentric pipes areprovided for separately raising the oil and t e -water.

4 The object of theimprovements s to provide an apparatus of this type in which in'- termingling of the oil and water being raised is effectively prevented, and with this object in view my invention consists in providing valves or Similar regulating meansat the bottom of the pipes which areso located that oil and water flow sep'arately 'to the pipes designed for raising the same.

For the purpose of explaining the invention two examples embodying the same have been sho'wn'in the accompanying drawings,

h my improved apparatus,

in which" the same letters of reference have.

been used in all the views to indicate corresponding parts. In said drawings,

Fig. 1, is a sectional elevation showing Fig. 2, is a sectional plan view taken on the line 22' of Fig. 1,and

' Fig. 3, is a sectional elevation similar to the one shown in Fig. 1 and showing a modification. i

Referring to the example-shown in Figs. 1 and 2, oil is assumed to be located at the level indicated by the line 0, while the wa- W, and oil and water may be under a pressure sufficient to raise the same through the well. The well is lined by means of a tube 1 extendin downwardly to the level of the oil. The 011 is raised through the said tube, while the water is raised through a-pipe 2 located concentrically within the'tube 1, a stufiing box 6 being provided at the top end of the tube 1, and-the pipe'2 and tube I having pipes at andv 5 connected thereto for delivering respectively water and oil.

' Into the bottom part of the tube 1 there extends the top end of a cylinder 8 which is tightened relatively to the tube by means of a packing medium 7, the said cylinder being closed at its bottom. end and provided below the bottom end of the tube. 1 with holes 9. Further, the'said cylinder is pro-' vided with slots 11. Within the cylinder .8 there is a tubular plunger 19, which lisfixed to the bottom end of the pipe 2,and.which is formed with slots 12 corresponding in po-' sition to the slots-11 made in the cylinder 8, the construction and operation of the saidslots being illustrated in Fig. 2; In the position of the parts shown in Figs. 1 and 2 the slots 11, 12 are perfectly open to permit the flow of the water through the same and into the plunger 10: However, when rotating the plunger 10 in clockwise direction the slots 11 and 12 are gradually closed, such rotary movement being imparted to the plunger 10 by rotating the pipe 2. Suitable means are provided for rotating the pipe. To show what may be done, a worm gearing 2 is'keyed to the top end of the pipe which worm gearingis engaged by a worm '2 provided with hand-operated means-such as a crank 2 for rotating the same.

At its top end the cylinder is formed with a' conical valveisea't 14 cooperating with a valve cone 14 fixed to the pipe 2, Fig. 1

showing the valvein a median position. By

elevating the pipe '2 the valve is opened, and

by lowering the same it may. be completely closed. Suitable means may be provided for show What may be done'the pipe 2 is suspended from a screw-threadedrod 16 having a-worm gearing 1-8 screwing thereon, the said worm gearing being supported on a frame 19 and adap'tedto be rotated 12 is such that they are adapted to register wlth the slots 11 in any vertical position of the pipe 2-.

v t The distance-NZ between the lowermost y means of a worm 17. The length of the slots thus elevating and lowering the pipe. To

oil-intake hole 9 and the topends of the slots 11 will be different according to the distribution of the oil and water, and it can inany case, be so great'that intermingling ofoil and water is avoided. If simultaneously oil and water are raised from the bottom of the well, the pipe 2 is set in the position i'n-which the valve 14, 14*" and the slots 11,12 ar'eopen. If only oil is to be raised, the'-p'ipe 2is rotated so far that I the plunger 10 closes the slots 11% In a similar way, by lowering the pipe the valve 1 1,14: maybe closed and the slots 11, 12

opened for exclusively raising water from the well. By setting-the valves and slots in intermediate positions the amounts of water and oil can be regulated.

In Fig. 3 I have shown a with. At the bottom.of. the well there is a cylinder 21 which is tightened relatively to modification in i which the tube 1 liningthe well is dispensed and bottom with slots 37 and 138. In the reduced top part 41 of the cylinder 21 the bottom end of a pipe 42 is guided, and con centrically of the said pipe there is a pipe 43, the pipe 42 being designed for raising the oil, while the pipe 43 is designed for Within the cylinder 21 raising the water.

body 22, whlch is formed there is a tubular at its top with a conical valve seat and at p I within the tubular body 22 and it extends Y and the pipe 43, the said pipe and chamber 1 into the chamber'28 thereof. It is formed with a conical valve 29 cooperating with the valve seat 23 for closing the bottom part of the cylinder 21 relatively to the chamber 28 communicating with each other through slots 27. p

At their top ends the pipes 42 and 43 are closed relatively to each other by means of a stufiing box 44. The pipe 43 is suspended. in the manner described with reference to the pipe 2 shown in Fig. 1 by means of a screwthreadedrod 16 and a worm gearing 17 18 adapted to lower and elevate the said pipe. Means for rotating the said pipe are not needed. The pipe 42 is adapted to be shifted in vertical direction by means of a worm gearing 34, 35 supported-on a frame33, the

ear s crew-threaded bushing 36 fixed' to the pipe 42.

The distribution of the oil and the water at the bot-tom of the well hasbeen indicated by the dottedlines O and W, and the 'distance between the bottom part of the slots 37 and the top of the slots 38 has been indicated by the line N-Z.

Inthe position of the parts shown in Fig. 3 both valves 25, 31 and 23,.29 are open, so that oil is raised by the pressure of the rock bearin thereon through the slots 37 the top part o the cylinder 21, the valve 25, 31 and the pipe 42. Further, water is raised by the pressure bearing thereon through the slots 38, the tubular member 24, the valve 23, 29, the chamber 28, the slots 27 and-the pipe 43.

. By shifting either one of the pipes 42 or 43 or both pipes in vertical direction the flow of water and oil can be regulatedin the manner described above.

By means of the apparatus described herein the flow of 'oil and water through the well can be entirely shut 03. Therefore, the apparatus can be used in wells having exclusively a supply of oil for closing the well at wheel 35 screwing on an externallyits bottom. Further, the apparatus can be used in such wells in which pumps are used for raising the oil, or in which the oil, or the oil and water are raised by means of compressed air..

WVhile in describing the invention refer once has been made to two particular examles embodying the same I wish it to be'understood that my invention is not limited to the constructions shown in the drawings,- and that various changes may be made in the general arrangement'of the apparatus and the construction of its parts without departing from the invention.

I claim:

l...An apparatus wells, comprising concentric pipes extending downwardly into the well and communicating respectively with the parts of the rock containing oil and water, and means located at the: bottom parts of, said pipes for selectively closing and opening the same.

wells, comprising concentric pipes disposed within the well and communicating respectively with the parts of the rock containing oiland water, a cylinder projecting downwardly from the bottom end of the outer pipe and formed with openings respectively at the parts passing throughthe oil and through the water, a valve cone connected with the inner pipe and adapted to close said cylinder at its top end, and a slotted plunger rotatably mounted within said cylinder and connected to the inner pipe, said plunger being locatedin position for opening and closing said lower openings of said cylinder.

3. An apparatus for raising oil from wells for raising oil fronr 2. An apparatus for raising, oil from,

the slots of comprising concentric pipes extending to the bottom of said well, means to shift one of i said pipes, a cylinder extendin downwardly from said outer pipe, space openings in i said cylinder for oil and water respectively,-

and valves operated by pipe movement for I selectively regulating the flow of fluid from said openings through said pipes.

' 4. An apparatus for raising oil from wells, comprising concentric pipes extending downwardly into the well and communicating respectively with the oil and water strata, the outer of said concentric pipes including spaced openings at'the oil and water strata respectively, means to prevent communica-' tion between said openings, and valve means located adjacent the lower ends of each of said pipes for selectively opening and closing said pipes to the flow of fluid from said openings.

In testimony whereof I hereunto aflix my signature.

B. SCHWEIGER. 

